This document provides definitions for key terms used in Stuart Hall's essay "Encoding/Decoding" including articulation, ideology, sign, code, language, and polysemy. It explains that articulation refers to connections, ideology refers to beliefs that characterize a society, and signs, codes, and language are related terms from semiotics referring to things that represent other things according to conventions. Polysemy means a sign can have different meanings. The document asks questions about Hall's arguments against the standard communication model, how encoding and decoding are organized by codes, why the moments of encoding and decoding are important, and how production and reception are related.